Question

33. a) Define atomicity. Give an example of diatonic atom.
b) How would you differentiate between a molecule of an element and molecule of a compound? State 1 point only.
c) Write down the formula of the following compounds:
i) Baking Soda ii) Slaked Lime

Answer 1

Explanation:

a) Atomicity is the number of atoms present in a molecule of an element. Example:Diatomic molecule - Oxygen (O2)

b) The only difference between a molecule of a compound and a molecule of an element is that in a molecule of an element, all the atoms are the same. For example, in a molecule of water (a compound), there is one oxygen atom and two hydrogen atoms. But in a molecule of oxygen (an element), both of the atoms are oxygen.

c) i) Baking Soda - NaHCO₃

ii) Slaked Lime - Ca(OH)₂

Answer 2

Answer:

a) Atomicity is defined as the total number of atoms that constitute a molecule.

Examples of diatomic atoms are H2, O2, N2 etc.

b) The molecules of an atoms contains only one type of element whereas in molecules of compounds, there are two or more types of elements.

c) i) NAHCO3

ii) CA(OH)2